Parking in Rome...

[catso]

Am renting an apartment in Rome for a few days in August, the apartment is in Piazza Navona and in the ZTL (no cars allowed - mostly) as there is no official parking/transit in the area and because I would like the car intact to get us to the South of France and then home again afterwards, I would like to find some secure parking nearby.

Can anyone recommend me a good, safe (honest operators) car park within walking distance of P. Navona, preferably that I can book in advance?

TIA.

[catso]

I've booked an underground car park at the Termini station, costs about £12/day but worth it to have the car intact (hopefully) on our return. Last time I went to Rome I believe it was the car crime capital of the world - it may have improved by now, but I doubt it?